Home / 139,742.55-192,838.37-76,080.21

Finding the Fourth Proportional to 139,742.55, 192,838.37 and 76,080.21

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Solution

The fourth proportional to 139,742.55, 192,838.37 and 76,080.21 is: 104,987.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,742.55 : 192,838.37 = 76,080.21 : x
  2. Step 2: Convert to fraction form
    139,742.55/192,838.37 = 76,080.21/x
  3. Step 3: Cross multiply
    139,742.55x = 192,838.37 × 76,080.21
  4. Step 4: Simplify right side
    139,742.55x = 14,671,183,305.26
  5. Step 5: Solve for x
    x = 14,671,183,305.26/139,742.55
  6. Step 6: Final answer
    x = 104,987.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.